Re: PCI rescan : can't assign mem

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On Wed, Sep 2, 2015 at 12:01 AM, Peio <peio@xxxxxxxxxxx> wrote:
> Yinghai Lu <yinghai <at> kernel.org> writes:
>> and 00:02.0 use almost all
>>
>> [    0.278221] pci 0000:00:02.0: reg 0x10: [mem 0x90000000-0x903fffff]
>> [    0.278239] pci 0000:00:02.0: reg 0x18: [mem 0x80000000-0x8fffffff
> pref]
>>
>> so we have no chance to allocate MMIO to 00:1c.0
>>
>
> Any workaround?.

boot with pci=nocrs ?

>
> Is the BIOS responsible for allocating memory resources in Linux?.

The resource range for root bus. As BIOS may need to set other registers to make
them effective.

> Perhaps changing some BIOS parameter ACPI related?.

Try to get BIOS update.

> If I change BIOS parameters I'll need a fresh install or the actual kernel
> reconigzes changes?.
should not.
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